Craig , I know your are an expert on this but If it could be of any help, I used to do Mack trucks for a dealer and we surrounded the truck with white cardboard so it give us a nice reflection on wheels and lower part. Also some powerful lighting to give it a shine. All this in the parking lot of the dealer. Then Photoshop.
Oh I wish. All of that requires time, which is not something I have an over abundance of with this client. It's generallly a 20 - 30 shot day, including motorhome interiors.
I do appreciate the suggestions my friend.
The units look like this...